Optimization of Crystallinity of Yttrium Carbonate Precipitation by Response Surface Method AITranslate
Abstract AITranslate
Using sodium bicarbonate solution as the precipitant of yttrium carbonate,the influence of reaction temperature,feeding speed,seed crystal amount and aging time on the crystallinity of yttrium carbo-nate was studied by response surface method,and the optimal technical conditions for crystallization of yttrium carbonate were obtained.The results show that the four factors have effect on the crystallinity of yttrium carbonate crystal in order:seed crystal amount>reaction temperature>aging time>feeding speed.The optimal technical conditions are reaction temperature of 72.22℃,feeding speed of 1.91 mL/min,seed crystal amount of 7.19 mL and aging time of 2.29 h.Under the optimal conditions,the average intensity of the three major XRD peaks of yttrium carbonate is 515,the particle size distribution is concentrated and large particles are dominative,the crystal grain size significantly increases,the specific surface area of the crystal decreases,and the flocculent structure on the particle surface decreases.
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DOI：
Chinese Library Classification Number:TQ133.23[化学工程—无机化工]
Citation Information:
Using sodium bicarbonate solution as the precipitant of yttrium carbonate,the influence of reaction temperature,feeding speed,seed crystal amount and aging time on the crystallinity of yttrium carbo-nate was studied by response surface method,and the optimal technical conditions for crystallization of yttrium carbonate were obtained.The results show that the four factors have effect on the crystallinity of yttrium carbonate crystal in order:seed crystal amount>reaction temperature>aging time>feeding speed.The optimal technical conditions are reaction temperature of 72.22℃,feeding speed of 1.91 mL/min,seed crystal amount of 7.19 mL and aging time of 2.29 h.Under the optimal conditions,the average intensity of the three major XRD peaks of yttrium carbonate is 515,the particle size distribution is concentrated and large particles are dominative,the crystal grain size significantly increases,the specific surface area of the crystal decreases,and the flocculent structure on the particle surface decreases.
quote
| GB/T 7714-2015 | [1] LIU Qing-sheng, CHENG Hua-jin, WANG Xue-zhong, et al. Optimization of Crystallinity of Yttrium Carbonate Precipitation by Response Surface Method[J]. Rare Metals and Cemented Carbides, 2021(4): 35-42. |
| MLA | [1] LIU Qing-sheng, et al., "Optimization of Crystallinity of Yttrium Carbonate Precipitation by Response Surface Method." Rare Metals and Cemented Carbides, no. 4, 2021, pp. 35-42. |
| APA | [1] LIU Qing-sheng, CHENG Hua-jin, WANG Xue-zhong, & LI Hua-jie. (2021). Optimization of Crystallinity of Yttrium Carbonate Precipitation by Response Surface Method. Rare Metals and Cemented Carbides(4), 35-42. |
| IEEE | [1] LIU Qing-sheng, CHENG Hua-jin, WANG Xue-zhong, and LI Hua-jie, "Optimization of Crystallinity of Yttrium Carbonate Precipitation by Response Surface Method," Rare Metals and Cemented Carbides, no. 4, pp. 35-42, 2021. keywords: {yttrium carbonate;crystallinity;sodium bicarbonate;precipitation;response surface method} |